Christian abble



(No Mdem C. ABBLE.

COFFEE RASTER.

Patented Mar. 7, 1882.

FIG Z.

INVENTR UNITED STATES PATENT OEEIcE. i

CHRISTIAN ABELE, OF NEW YORK, N..Y. 1

COFFEE-ROASTER.

SPECIFICATION forming part of Letters Patent No. 254,582, dated March 7,1882. Application inea september 14, isai. (No modem' tion of certaindevices or attachments in an apparatus for roasting coffee and similarberries; and the invention consists chiefly in the combination of acircular auged plate with the front plate of the furnace in such amanner that the end of the roasting-cylinder is supported by said plate,and forms acovering for the end of the cylinder and an inlet and outletfor the coee, as will hereinafter appear.

In the drawings, Figure lis a perspective view of the metal portions ofthe apparatus in position for the application of the brick Walls 0f thefurnace and the covering. Fig. 2 is a vertical section of the frontplate through the length of the axis of the cylinder. Fig. 3 is a frontelevation of the opening or pendulous lever that operates the door.

At A is represented the cylinder, made of heavy sheet metal, andperforated in the usual manner, and mounted over the grate B, to permitthe direct action of the heat throughthe perforations, as well as thebody of the cylinder.l The front end of the cylinder isu slipported by ametal rim at C, which is made with arms, like a pulley, at C', curvedinward and cast with a hub, D, that extends out through the plate at E,and which has a bearing, F, cast upon its outer surface to serve as *asupport for the said journal or hub D.

The plate E is of circular form to correspond to the front end ofthecylinder, and is inserted in a corresponding opening in the front plate,G, of the furnace proper; but the said opening in the plate G is abouttwo inches larger than the plate E, so that an open space is left aroundthe plate E of circular form, and outside of the cylinder and throughsaid openin g the air and gases can pass or escape at that end of theroasting-cylinder to free it from any overcharging of the matter thrownolf in the process of roasting. This plate E is held in the said openingby lugs cast upon its outer edge, as shown at H, and by bolts thatfasten it to the front plate, Gr.

Upon the inner face of the plate E is a flange at K, made to t closelyaround the rim G, so that the coffee-berries cannot work out between theend of the cylinder and the plate AEl To further hold these two partsclosely together the hub D is extended through the bearing F,

and has a cap at L, fastened by a pin or setscrew on its outer end, topress against the outer end of the bearing F, and thereby prevent thecylinder from working back from the inner face of the plate E. This capL has a square' projection on itsouter end at L to receive a crank forturning the cylinder by hand when required.

Upon the upper portion of the front plates a hopper, M, is fastened, andis of sufficient size to receive a sack of coffee at one time, and thelower portion of said hopper extends down to match an opening in theplate E, and has a chute to conduct the codec directly into theroasting-cylinder in the ordinary form of hoppers for bolts andgrain-cleanin g reels.

Upon the interiorr of the cylinder are fast cned curved plates, to serveas lifters and stirrers to agitata the coffee and work it to and fro, asin the old form of such an apparatus.

After the roasting process is completed the coffee is discharged at thefront end of the cylinder through an opening, N, in the lower portion ofthe plate E.

A door or valve, O, is fastened upon the plate to cover the saidopening. It is hinged at its upper edge, and fastened by a drop orvertical sliding bolt at P, which engages with a stop at I on the bottomof the spout R, that is fastened or cast upon the outer face of theplate E. Y f

To raise said door or valve to open it, a lin at S connects it with alever at T, the upper end of which is pivoted to the hub or bearing F,and in the upper portion of said lever a socket, T', is formed (see Fig.3) to receive a corresponding har, W, that serves as a liftinglever tovibrate the lever T outward; and the lifting-lever is held up by a hookat X upon a chain depending from the hopper, as shown, and thusthelowerend of the door is held open, while the spiral plates on theinterior of the cylinder Work the coffee out through the open- ICO inginto a box or receiver that may be run under the chute in front of thefurnace.

For the purpose of ytesting, or trying the condition of the coft'eeduring the process of roast-4 ing, an opening, Z, is made iu the plateE, through which a spoon may be introduced to catch samples as thecylinder rotates by holding the open dish ofthe spoon in the saidopening, as represented in the drawings.

The hub F on the plate E, serving as a bearing for the axis of thecylinder, is formed with au opening on its under side, near the plate E,as shown at F', to permit the escape of the oil on the outside ofthecylinder, and thereby prevent it from mixing with the cofee.

Over the hopper a funnel is placed tol conduct oli the smoke and gasesto the flue, and in this a circulating fau may he placed to i11- creasethe draft.

Having thus described my invention, I claim- 1. In a coffee-roastin gapparatus, the combination of the cylinder, its supporting-rimandjournal, with the bearing or hub upon the front plate, E, ashercinbet'ore set forth.

2. The combination of the roasting-cylinder, having a supporting-rim, C,arms C', and journal supported in a hub, with the front plate, E, theouter edge 'of which is flanged to receive the end ot the cylinder orits supporting-rim C, as hereinbefore set forth.

3. The combination of the plate E with the front plate of the furnace,provided with bear in gs for the cylinder, and havingaspace around itsouter edge to permit the escape of the gases l and smoke, ashereinbefore set forth.

4. The plate E, outlet-opening, and door, and the link and levers T andW, all combined and arranged as and for the purposes hereinbefore setforth.

In witness whereof I have hereunto subscribed my name in the scribin gwitnesses.

Y CHRISTIAN ABELE.

Witnesses EUGENE N. ELIor, BOYD ELIoT.

presence of two sub- 4o

